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Lithologic controls on AIRSAR signatures of bedrock and alluvium, at Lunar Crater, NevadaRadar backscatter intensity as measured by calibrated synthetic aperture radar (SAR) systems is primarily controlled by three factors: local incidence angle, wavelength-scale roughness, and dielectric permittivity of surface materials. In order to make adequate use of radar observations for geological investigations of surface type, the relationships between lithology and the above characteristics must be adequately understood. In arid terrains weathering signatures (e.g. fracturing, debris grain size and shape, slope characteristics) are controlled to some extent by lithologic characteristics of the parent bedrock. These textural features of outcrops and their associated debris control radar backscatter to varying degrees. The quad-polarization JPL AIRSAR system allows sampling of textures at three distinct wavelength scales: C-band (5.66 cm), L-band (23.98 cm), and P-band (68.13 cm). This paper presents a discussion of AIRSAR data using recent field observations of weathered felsic and basaltic volcanic rock units exposed in the southern part of the Lunar Crater Volcanic Field, in the Pancake Range of central Nevada. The focus is on the relationship of radar backscatter at multiple wavelengths to weathering style and parent bedrock lithology.
Document ID
19950027392
Document Type
Conference Paper
Authors
Rivard, Benoit (Canada Centre for Remote Sensing Ottawa Ontario, Canada)
Diorio, Marc (Canada Centre for Remote Sensing Ottawa Ontario, Canada)
Budkewitsch, Paul (Canada Centre for Remote Sensing Ottawa Ontario, Canada)
Date Acquired
September 6, 2013
Publication Date
January 23, 1995
Publication Information
Publication: JPL, Summaries of the Fifth Annual JPL Airborne Earth Science Workshop. Volume 3: AIRSAR Workshop
Subject Category
EARTH RESOURCES AND REMOTE SENSING
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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IDRelationTitle19950027368Analytic PrimarySummaries of the Fifth Annual JPL Airborne Earth Science Workshop. Volume 2: TIMS Workshop